的输出是共享对象而不是可执行文件

的输出是共享对象而不是可执行文件

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"make"的输出是共享对象而不是可执行文件

本文介绍了"make"的输出是共享对象而不是可执行文件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

这似乎是g ++问题，因为使用clang ++编译确实会输出可执行文件.

我编写了一个具有主要功能的C ++应用程序，创建了一个应用程序窗口，加载了3D fbx文件，并使用opengl进行了绘制.使用CMakeLists.txt文件创建用于编译的Makefile:

cmake_minimum_required(VERSION 2.8)
project(solight)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
INCLUDE_DIRECTORIES(lib/include)

###########################################
#SET THIS TO X32 IN CASE OF A 32 BIT SYSTEM
###########################################
set (ARCH x64)

set (SRC_LIST
    src/assetmanager.cpp src/assetmanager.h
    src/mesh.cpp src/mesh.h
    src/model.cpp src/model.h
    src/modelloader.h
    src/main.cpp
    src/math.h
    src/fbxmodelloader.cpp src/fbxmodelloader.h
    src/rendermodule.h
    src/openglrendermodule.cpp src/openglrendermodule.h
    src/textureloader.h
    src/engine.cpp src/enginemodules.cpp src/engine.h
)


##########################
#EXTERNAL LIBRARY HANDLING
##########################

set (LINUX_DEPS
    libfbxsdk.a
    pthread
    libSDL2.a
    GL
    libGLEW.a
    dl
)

set (WIN32_DEPS
)

set (APPLE_DEPS
)

if (UNIX AND NOT APPLE)
    set (DEPS ${LINUX_DEPS})
    set (OS Linux)
endif()

if (APPLE)
    set (DEPS ${APPLE_DEPS})
    set (OS Apple)
endif()

if (WIN32)
    set (DEPS ${WIN32_DEPS})
    set (OS WIN32)
endif()


LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/lib/${OS}/${ARCH})

####################
#EXECUTBALE CREATION
####################

add_executable(${PROJECT_NAME} ${SRC_LIST})
target_link_libraries(${PROJECT_NAME} ${DEPS})

因此，在运行由cmake创建的makefile之后，输出不是预期的可执行文件，而是共享的目标文件.如果我在其上运行file命令，则输出为:

solight: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=f20c07c8743a70bca20d4a0d9f50fcb108b8140e, not stripped

执行时

 /lib64/ld-linux-x86-64.so.2 ./solight --verify

程序将按应有的方式执行.

但是当我通过终端执行文件时，它运行得很好，创建了窗口并渲染了模型.

为什么要使用共享对象文件?预先感谢.

运行时

make VERBOSE=1

输出为:

    /usr/bin/cmake -H/home/wouter/Documents/Solight -B/home/wouter/Documents/Solight/build --check-build-system CMakeFiles/Makefile.cmake 0
/usr/bin/cmake -E cmake_progress_start /home/wouter/Documents/Solight/build/CMakeFiles /home/wouter/Documents/Solight/build/CMakeFiles/progress.marks
make -f CMakeFiles/Makefile2 all
make[1]: Entering directory '/home/wouter/Documents/Solight/build'
make -f CMakeFiles/solight.dir/build.make CMakeFiles/solight.dir/depend
make[2]: Entering directory '/home/wouter/Documents/Solight/build'
cd /home/wouter/Documents/Solight/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/wouter/Documents/Solight /home/wouter/Documents/Solight /home/wouter/Documents/Solight/build /home/wouter/Documents/Solight/build /home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/DependInfo.cmake --color=
Dependee "/home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/DependInfo.cmake" is newer than depender "/home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/depend.internal".
Dependee "/home/wouter/Documents/Solight/build/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/depend.internal".
Scanning dependencies of target solight
make[2]: Leaving directory '/home/wouter/Documents/Solight/build'
make -f CMakeFiles/solight.dir/build.make CMakeFiles/solight.dir/build
make[2]: Entering directory '/home/wouter/Documents/Solight/build'
[ 11%] Building CXX object CMakeFiles/solight.dir/src/assetmanager.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/assetmanager.cpp.o -c /home/wouter/Documents/Solight/src/assetmanager.cpp
[ 22%] Building CXX object CMakeFiles/solight.dir/src/mesh.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/mesh.cpp.o -c /home/wouter/Documents/Solight/src/mesh.cpp
[ 33%] Building CXX object CMakeFiles/solight.dir/src/model.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/model.cpp.o -c /home/wouter/Documents/Solight/src/model.cpp
[ 44%] Building CXX object CMakeFiles/solight.dir/src/main.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/main.cpp.o -c /home/wouter/Documents/Solight/src/main.cpp
[ 55%] Building CXX object CMakeFiles/solight.dir/src/fbxmodelloader.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/fbxmodelloader.cpp.o -c /home/wouter/Documents/Solight/src/fbxmodelloader.cpp
[ 66%] Building CXX object CMakeFiles/solight.dir/src/openglrendermodule.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/openglrendermodule.cpp.o -c /home/wouter/Documents/Solight/src/openglrendermodule.cpp
[ 77%] Building CXX object CMakeFiles/solight.dir/src/engine.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/engine.cpp.o -c /home/wouter/Documents/Solight/src/engine.cpp
[ 88%] Building CXX object CMakeFiles/solight.dir/src/enginemodules.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/enginemodules.cpp.o -c /home/wouter/Documents/Solight/src/enginemodules.cpp
[100%] Linking CXX executable solight
/usr/bin/cmake -E cmake_link_script CMakeFiles/solight.dir/link.txt --verbose=1
/usr/bin/c++    -std=c++14   CMakeFiles/solight.dir/src/assetmanager.cpp.o CMakeFiles/solight.dir/src/mesh.cpp.o CMakeFiles/solight.dir/src/model.cpp.o CMakeFiles/solight.dir/src/main.cpp.o CMakeFiles/solight.dir/src/fbxmodelloader.cpp.o CMakeFiles/solight.dir/src/openglrendermodule.cpp.o CMakeFiles/solight.dir/src/engine.cpp.o CMakeFiles/solight.dir/src/enginemodules.cpp.o  -o solight  -L/home/wouter/Documents/Solight/lib/Linux/x64 -rdynamic -Wl,-Bstatic -lfbxsdk -Wl,-Bdynamic -lpthread -Wl,-Bstatic -lSDL2 -Wl,-Bdynamic -lGL -Wl,-Bstatic -lGLEW -Wl,-Bdynamic -ldl -Wl,-rpath,/home/wouter/Documents/Solight/lib/Linux/x64
/home/wouter/Documents/Solight/lib/Linux/x64/libfbxsdk.a(fbxutils.o): In function `fbxsdk_2015_1::FbxPathUtils::GenerateFileName(char const*, char const*)':
(.text+0x4c8): warning: the use of `tempnam' is dangerous, better use `mkstemp'
make[2]: Leaving directory '/home/wouter/Documents/Solight/build'
[100%] Built target solight
make[1]: Leaving directory '/home/wouter/Documents/Solight/build'
/usr/bin/cmake -E cmake_progress_start /home/wouter/Documents/Solight/build/CMakeFiles 0
解决方案

使用特殊的CFLAGS编译应用程序时，可能会发生这种情况. -pie -fPIE:

$ echo 'int main() { return 0; }' | gcc -x c - -fPIE -pie
$ file a.out
a.out: ELF 64-bit LSB  shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24,

也许您可以使用VERBOSE=1运行make，看看是否是这种情况?通常，file可能会使用启发式方法来识别文件类型，因此您不应过于依赖它.

对于ld.so错误，您使用了错误的32位动态链接器来运行64位应用程序.改用/lib64/ld-linux-x86-64.so.2(如file所述).

另一个选择是您的GCC使用-enable-default-pie 似乎适用于现代Ubuntu .您可以通过使用CFLAGS = -no-pie(或-nopie，具体取决于GCC版本)进行cmake禁用此功能，但我不愿意这样做-PIE可执行文件通过允许ASLR做得更好而使您的系统更安全. /p>

Edit: It appears to be a g++ issue, as compiling with clang++ does output an executable file.

I've written a C++ application that has a main function, creates an application window, loads a 3D fbx file and draws that using opengl. To create the Makefile for compiling i'm using a CMakeLists.txt file:

cmake_minimum_required(VERSION 2.8)
project(solight)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
INCLUDE_DIRECTORIES(lib/include)

###########################################
#SET THIS TO X32 IN CASE OF A 32 BIT SYSTEM
###########################################
set (ARCH x64)

set (SRC_LIST
    src/assetmanager.cpp src/assetmanager.h
    src/mesh.cpp src/mesh.h
    src/model.cpp src/model.h
    src/modelloader.h
    src/main.cpp
    src/math.h
    src/fbxmodelloader.cpp src/fbxmodelloader.h
    src/rendermodule.h
    src/openglrendermodule.cpp src/openglrendermodule.h
    src/textureloader.h
    src/engine.cpp src/enginemodules.cpp src/engine.h
)


##########################
#EXTERNAL LIBRARY HANDLING
##########################

set (LINUX_DEPS
    libfbxsdk.a
    pthread
    libSDL2.a
    GL
    libGLEW.a
    dl
)

set (WIN32_DEPS
)

set (APPLE_DEPS
)

if (UNIX AND NOT APPLE)
    set (DEPS ${LINUX_DEPS})
    set (OS Linux)
endif()

if (APPLE)
    set (DEPS ${APPLE_DEPS})
    set (OS Apple)
endif()

if (WIN32)
    set (DEPS ${WIN32_DEPS})
    set (OS WIN32)
endif()


LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/lib/${OS}/${ARCH})

####################
#EXECUTBALE CREATION
####################

add_executable(${PROJECT_NAME} ${SRC_LIST})
target_link_libraries(${PROJECT_NAME} ${DEPS})

So after running the makefile that cmake created, the output is not an executable as expected, but a shared object file. If i run the file command on it this is the output: 

solight: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=f20c07c8743a70bca20d4a0d9f50fcb108b8140e, not stripped

When executing

 /lib64/ld-linux-x86-64.so.2 ./solight --verify

the program executes as it should.

But when i execute the file through the terminal it runs just fine, creates the window and renders the model.

Any explantion as to why this is a shared object file?Thanks in advance.

Edit:When running 

make VERBOSE=1

the output is:

    /usr/bin/cmake -H/home/wouter/Documents/Solight -B/home/wouter/Documents/Solight/build --check-build-system CMakeFiles/Makefile.cmake 0
/usr/bin/cmake -E cmake_progress_start /home/wouter/Documents/Solight/build/CMakeFiles /home/wouter/Documents/Solight/build/CMakeFiles/progress.marks
make -f CMakeFiles/Makefile2 all
make[1]: Entering directory '/home/wouter/Documents/Solight/build'
make -f CMakeFiles/solight.dir/build.make CMakeFiles/solight.dir/depend
make[2]: Entering directory '/home/wouter/Documents/Solight/build'
cd /home/wouter/Documents/Solight/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /home/wouter/Documents/Solight /home/wouter/Documents/Solight /home/wouter/Documents/Solight/build /home/wouter/Documents/Solight/build /home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/DependInfo.cmake --color=
Dependee "/home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/DependInfo.cmake" is newer than depender "/home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/depend.internal".
Dependee "/home/wouter/Documents/Solight/build/CMakeFiles/CMakeDirectoryInformation.cmake" is newer than depender "/home/wouter/Documents/Solight/build/CMakeFiles/solight.dir/depend.internal".
Scanning dependencies of target solight
make[2]: Leaving directory '/home/wouter/Documents/Solight/build'
make -f CMakeFiles/solight.dir/build.make CMakeFiles/solight.dir/build
make[2]: Entering directory '/home/wouter/Documents/Solight/build'
[ 11%] Building CXX object CMakeFiles/solight.dir/src/assetmanager.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/assetmanager.cpp.o -c /home/wouter/Documents/Solight/src/assetmanager.cpp
[ 22%] Building CXX object CMakeFiles/solight.dir/src/mesh.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/mesh.cpp.o -c /home/wouter/Documents/Solight/src/mesh.cpp
[ 33%] Building CXX object CMakeFiles/solight.dir/src/model.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/model.cpp.o -c /home/wouter/Documents/Solight/src/model.cpp
[ 44%] Building CXX object CMakeFiles/solight.dir/src/main.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/main.cpp.o -c /home/wouter/Documents/Solight/src/main.cpp
[ 55%] Building CXX object CMakeFiles/solight.dir/src/fbxmodelloader.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/fbxmodelloader.cpp.o -c /home/wouter/Documents/Solight/src/fbxmodelloader.cpp
[ 66%] Building CXX object CMakeFiles/solight.dir/src/openglrendermodule.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/openglrendermodule.cpp.o -c /home/wouter/Documents/Solight/src/openglrendermodule.cpp
[ 77%] Building CXX object CMakeFiles/solight.dir/src/engine.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/engine.cpp.o -c /home/wouter/Documents/Solight/src/engine.cpp
[ 88%] Building CXX object CMakeFiles/solight.dir/src/enginemodules.cpp.o
/usr/bin/c++    -I/home/wouter/Documents/Solight/lib/include  -std=c++14   -o CMakeFiles/solight.dir/src/enginemodules.cpp.o -c /home/wouter/Documents/Solight/src/enginemodules.cpp
[100%] Linking CXX executable solight
/usr/bin/cmake -E cmake_link_script CMakeFiles/solight.dir/link.txt --verbose=1
/usr/bin/c++    -std=c++14   CMakeFiles/solight.dir/src/assetmanager.cpp.o CMakeFiles/solight.dir/src/mesh.cpp.o CMakeFiles/solight.dir/src/model.cpp.o CMakeFiles/solight.dir/src/main.cpp.o CMakeFiles/solight.dir/src/fbxmodelloader.cpp.o CMakeFiles/solight.dir/src/openglrendermodule.cpp.o CMakeFiles/solight.dir/src/engine.cpp.o CMakeFiles/solight.dir/src/enginemodules.cpp.o  -o solight  -L/home/wouter/Documents/Solight/lib/Linux/x64 -rdynamic -Wl,-Bstatic -lfbxsdk -Wl,-Bdynamic -lpthread -Wl,-Bstatic -lSDL2 -Wl,-Bdynamic -lGL -Wl,-Bstatic -lGLEW -Wl,-Bdynamic -ldl -Wl,-rpath,/home/wouter/Documents/Solight/lib/Linux/x64
/home/wouter/Documents/Solight/lib/Linux/x64/libfbxsdk.a(fbxutils.o): In function `fbxsdk_2015_1::FbxPathUtils::GenerateFileName(char const*, char const*)':
(.text+0x4c8): warning: the use of `tempnam' is dangerous, better use `mkstemp'
make[2]: Leaving directory '/home/wouter/Documents/Solight/build'
[100%] Built target solight
make[1]: Leaving directory '/home/wouter/Documents/Solight/build'
/usr/bin/cmake -E cmake_progress_start /home/wouter/Documents/Solight/build/CMakeFiles 0
解决方案

This may happen when application is compiled with special CFLAGS e.g. -pie -fPIE:

$ echo 'int main() { return 0; }' | gcc -x c - -fPIE -pie
$ file a.out
a.out: ELF 64-bit LSB  shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24,

Perhaps you could run your make with VERBOSE=1 and see if that's the case? In general file may use heuristics to identify filetype so you shouldn't rely on it too heavily.

As for your error with ld.so, you are using the wrong, 32-bit, dynamic linker to run 64-bit app. Use /lib64/ld-linux-x86-64.so.2 instead (as file told you).

EDIT: Another option is that your GCC is built with --enable-default-pie which seems to be the case for modern Ubuntu. You can disable this feature by cmaking with CFLAGS=-no-pie (or -nopie, depending on GCC version) but I'd rather not do that - PIE'ed executables make your system safer by allowing ASLR to do better job.

这篇关于"make"的输出是共享对象而不是可执行文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

08-23 01:58
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